Door operating device



March 20, 1934. i A HANSEN 1,951,905

noon OPERATING "DEVICE 7 Filed Dec. 27, 1929 3 Sheets' Sheet 1 .50 5/ 7INVENTOR, zyw/zm i w ATTORNEY March 29, 1934 HANSEN 1,951,905

DOOR OPERATING DEVICE Filed Dec. 27. 1929 3 Sheets- Sheet 2 IN! "EN TOR.

ATTORNEY March 20, 1934. E HANSEN 1,951,905

DOOR OPERATING DEVICE Filed Dec. 27, 1929 3 Sheets- Sheet 3 W a GAIN VENTOR.

ATTORNEY Patented Mar. 20, 1934 UNITED STATES DOOR OPERATING DEVICE-Ernest A. Hansen, Oakland, Calif., assignor to Controlador Corporation,Ltd., Oakland, Calif., acorporation of California Application December27, 1929, Serial No. 416,794

4 Claims. (01. 26863) The invention is for a door operating device. Theobjects of the invention are: First to provide a device for mechanicallyopening and closing doors, and utilizing'electric power for operatingsaid mechanism.

Second: To provide a device of the class described, whereby opposingdoors will be opened and closed coincidently, and whereby anyobstruction to. opening or closing will cause said electric circuit tobe broken, this stopping the operation of the device.

1 Third: To provide a device as described with resilient arms orconnecting rods to said doors toprevent damage due to improperadjustment 5 or obstructions.

'Fourth: To provide a deviceas described which may be controlled fromdifferent locations, and which may, in case of power failure or othertrouble, be readily disengaged from' the driving means so as to permitmanual operation of the doors. i

Fifth: To provide a device which, by manipulation of a switch, willcause said device to open the doors and automatically'stop themechanism, and switch on an electric light as soon as the doors arefully'opened, retaining the doors fully open and the light on untilaswitch isagain manipulated for closingthe doors, the light being turnedoff automatically when thedoorsare fullyclosed. f v 'a Other-objects ofthe invention will be apparent as the description is set forth and: fromthe appended claims.

In the accompanying drawings; Figure 1 illustrates the invention inmounted position as showing the doors closed.

Figure 2 is similar to .Figure 1,' but indicating the doors in openposition. V

Figure 3 is a fragmentary elevation of the de- 1 vice in mountedposition and with the doors closed.

Figure 4 is a fragmentary elevation indicating the circuit and reversingswitch control levers.

Figure 5 is a planview of the .invention. Figure 6. is a sectionallongitudinal elevation taken through the center 'of the device.

Figure '7 is a sectional transverse elevation the The connecting rods 5and. 6 are provided at their opposite ends with adjustable members '7,pivotally related to shoes 1 and 2 and arms 8 and 9. The connecting rods5 and 6 being threaded at their opposite ends to receive the axiallythreaded apertures in'members '7.

Operating arms 8-and 9 are oppositely disposed relative to each otherand are provided with the forked ends 10 to pivotally receive the eyemembers '7. Said arms 8 and 9 beingpreferably made of spring steel andattached at their opposite ends to levers 11 and 12 by bolting, rivetingor similar means.

Levers 11 and 12 are disposed one abovethe other and'turn on the samecenter, lever 12 being fixedly attached to vertical shaft 13 and lever11 being fixedly attached to hub 14 on bevel gear 15, shaft 13 beingfree to revolve and centrally. disposed in gear 15 and hub 14, said hub14 being free to revolve in the cooperatingbase or bearing 16 in housing17.

. Opposed bevel gear 18 is fixedly attached to shaft13, the cover .19providing a bearing 20 for the end of shaft 13 above gear 18. A bevelpinion 21 cooperates and is at all times in mesh with bevel gears 15 and18, revolving gears 15 and 18 in opposite directions, lever 9 moving ina clockwise direction and lever 8 moving counter clockwise for openingthe doors, as viewed from above and illustrated in Figure 5.

Cover 19 is fixedly retained in alignment by means of dowels 22 andbolts or screws 23. Bevel pinion 21 is fixedly attached to shaft 24,said shaft 24 being free to revolve in bearings 25 and 26, said shaft 24having fixedly attached thereto, a worm gear 2'7. I

A pocket 28 is formed in housing 1'7 to contain a lubricant for saidworm gear 27 and shaft 24.

A cradle 29 pivotally mounted adjacent one end,

with worm gear 27, thus releasing the drive and providing for manualoperation of the doors.

Suitable connections are provided as indicated at 36, and shown asoperated by a knob 37 outside the doors, the knob being of a type whichcan be and is normally, kept locked. As indicated, the control devicecomprises a pull rod 36, levers 38, shaft 39, said shaft being rotatablein a bearing 40 attached to housing 1'7. The shaft 32 has fixedlyattachedthereto a pulley 41,

driven by a belt 42, cooperating with a pulley 43, said pulleybeingfixedly attached to the shaft, in motor 44.

The automatic control comprises a pair of cams and 46 adjustably securedto the end of vertical shaft 13. A lever 47 is pivotally attached tocover 19 at 48, and is provided with the forked ends 4998 cooperatingwith cams 45 and 46. A

spring 50 is connected to the opposite end of lever 47, the opposite endof spring 50 cooperating with the operating lever 51 on a triple pole,double throw snap switch of standard make 52. A thermostatic controlswitch 53 of standard make is provided to guard against possible damageto motor or mechanism through obstructions or sticking of the doors.

' Flanges 54 and 55 integral with the housing 17 provide means for theinstallation of the device, holes 56 being adapted to receive lag screwsor bolts for fastening to the door framing or cap.

Doors 57 and 58 have attached thereto a pair of straps 59 and 60 oneabove the other: adapted to-coincidently close the doors irrespective ofa slight variation in adjustment of the rods 5 and 6.

An electric lamp 61 is mounted on the housing 1'7'as indicated and isadapted to be lightedwhen the doors 57 and 58 are fully opened, andremain lighted until the doors are fully closed.

' The wiring of thecircuit is indicated. in the wiring diagram Figure 9in which 62 and 63 indicate the input power lines. The motor armatureisindicated by character 44A, the motor field by 44F. Afour point snapswitch 64 is provided at some desired point, as inside the & building,and a three point switch 65 with means for locking in open circuit isprovided outside the building. The combination of switches may beextended as desired for control of the device from various locations.

Thermostatic switch 53 is normally retained with the circuit closed, asindicated. With triple pole double throw snap switch 52 shorted acrosscontact points 66 and 67, 68 and 69, .70 and 71 and switches 64 and 65in the positions indicated, the field circuit is from power line 62through field 44f, wire 72, switch arm 65, wire 73, switch arm 74, wire75, contact 70, switch arm 52c, contact 71, wire 76, thermostatic switch53 to power line 68.

The armature circuit is from power line 62 through wire 99, contact 69,arm 52b,contact 68, wire 77, brush 78, armature 44a, brush 79, wire 80,contact 66, arm 52a; contact .67, wire 81, and thence with the fieldcircuit through wire 72 and switch 65. 1

The lamp circuit is from power line 62 through wire 99, wire 82, lamp61, wire 83 to wire 84, the circuit of which is broken at both contacts85 and 86, consequently the lamp will not be lighted. As the doors reachfull open position, switch 52 is reversed, the field circuit beingbroken at contact 70, the armature circuit reversed, and lamp circuitcompleted through line 62, wire 99, wire 82, lamp 61, wire 83, wire 84,contact 86, arm 52c, contact 87, wire 88, wire 76, thermostatic switch53 to line 63, the lamp continuing lighted so long as the doors remainopen. By moving switch 65 to contact 85, the circuit to field 44 iscompleted through line 62, field 44f, wire 72', switch 65 to contact 85,arm 89, wire 84, contact 86, arm 520 to contact 87, wire 88, wire 76,thermostatic switch 53 to line 63, the current in the armature 44a beingreversed through line 62, wire 99, contact 90, arm 52b, contact 91,wire- 77, contact 93, arm 52a, contact 94, wire 81 to switch 65, thusreversing the motor and closing the doors, at which point, switch 52 isagain reversed, the lamp circuit being broken at switch arm 520.

If instead of moving switch arm 65, switch 64 is reversed, the circuitwould be completed through switch 65 to contact 97, wire 73, contact 96,arm 74 or 89, contact 95, wire 84. Therefore by operation of eitherswitch 65 or 64, the doors are opened, the lamp 61 being lighted as soonas the doors are fully opened, and switch 52 reversed, thereby reversingthe motor connections to either armature or field as desired andbreaking the circuit, except to lamp 61. By reversing either switch 640i65 the doors are-closed, and when fully closed, switch 52 is reversed tooriginal position, the lamp circuit being, broken as also the motorcircuit. This arrangement'provides for the lamp being lighted as soon asthe doors are fully opened, and maintaining said lamp lighted until thedoors areclosed.

Should any obstruction prevent the doors from opening or closing,slowing up. or stopping of the motor would cause an increased current toflow through the resistance in the thermostatic control;

switch, causing a heat expansible element 100 to cause a switch thereinto open and break the circuit, maintaining a broken circuit until manually restored. p

The motor 44 by means of: pulley 43, belt 4 and pulley 41 integral withshaft '32 causes said shaft tosrevolve with worm 31 affixed thereto,said worm driving worm gear 27 whichis fixed to shaft-24 androtatable inbearings 25 and 26. Bevel pinion 21 is fixed to shaft 24 and meshes withbevel gears '15 and 18, thus revolving said bevel gears in oppositedirections. Bevel gear 18 isfixed to shaft 13. Shaft 13 has the lever.12 attached thereto at the lower end, and in the circuit described turnsin a'counter clockwise direction, and by means-of arm 9 and. rod 6, withshoe 2 attached to door 58, pulls this door to closedpositiomcoincidently therewith, bevel gear 15 with clockwise rotation,rotatable on; shaft 13, hub 14'being rotatable in bearing .16, and arm11 being attached to said hub, closes door 57 by cooperation with arms 8and rod 5,ish0e 1 being attached to door 57. r

As shaft 13 revolves in a counter clockwise di rection, cam 45 coactswith tine 98, lever 47 swinging on pivot 48 and swinging spring 50across the pivotal center of the snap switch operating arm, spring 50thereby reversing switch 52, breaking contact between points-93 and 94,91 and 90, and 86 and 87, and making contact between .66 and 67, 68 and69, and and 71.-

Having described an operative method of constructing and using thedevicewhat I claim is:'

1. A device for operating a door comprising a shaft, a resilientlybendable spring arm con-' nected at one end to said shaft and having twolimiting positions of rest, means for rotating the shaft to swing thearm from one to the other of said positions, and a link pivotallyconnecting the free end of the arm with the door for opening and closingthe same upon movement of the arm from one to the other of saidpositions, said arm being substantially parallel with the link in one ofsaid positions and at right angles to the link at a point intermediatesaid positions.

2. A device for operating a pair of doors comprising a pair of shafts, apair of resiliently bend; able spring arms, each having an end connectedwith one of said shafts and each having. two limiting positions of rest,means for rotating the shafts to swing the arms from one to the other ofsaid positions, and a pair of links pivotally connecting the free endsof said arms with the doors for opening and closing the same uponmovement of the arms from one to the other of said positions, each ofsaid arms being substantially parallel with its connected link in bothof said positions of the arm and at right angles to said link at a pointintermediate said positions.

3. A device for operating a pair of doors comprising a pair of shafts, apair of resiliently bendable spring arms, each having an end connectedwith one of said shafts and each having two limiting positions of rest,a gear on each of said shafts, a pinion meshing with said gears, meansfor driving the pinion to swing the arms from one to the other of saidpositions, and a pair of links pivotally connecting the free ends ofsaid arms with the doors for opening and closing the same upon movementof the arms from one to the other of said positions, each of said armsbeing substantially parallel with its connected link in both of saidpositions of the arm and at right angles to said link at a pointintermediate said positions.

4. A door operating device comprising a shaft, a resiliently bendablespring arm mounted on the shaft and having two limiting positions ofrest, a link pivotally connected between the free end of said arm andthe door, and means for rotating the shaft to swing the arm from one tothe other of said positions for opening and closing the door.

ERNEST A. HANSEN.

